Year	% (modeled ILO estimate)
1991	51.577
1992	50.08
1993	48.153
1994	46.613
1995	44.281
1996	44.227
1997	44.472
1998	45.167
1999	46.018
2000	46.531
2001	46.253
2002	45.797
2003	45.255
2004	44.632
2005	44.134
2006	43.811
2007	43.621
2008	43.482
2009	43.391
2010	43.229
2011	43.094
2012	42.853
2013	42.589
2014	42.32
2015	42.065
2016	41.744
2017	41.531
2018	39.756
2019	39.454
2020	45.07
2021	36.299
2022	37.455
2023	38.228